“…Kuhn's concept of a paradigm as well as other concepts borrowed from the philosophy and history of science, such as Lakatos's (1970) conception of a "scientific research programme," have not only been used to provide grounds for defining distinct "schools of thought," but also to evaluate the overall evolution of the field as well as specific approaches in the field (Elman and Elman, 2003;Ferguson and Mansbach, 1993;Guzzini, 1998;Keohane, 1983;Lijphart, 1974aLijphart, , 1974bSmith, 1987;Tellis, 1996;Vasquez, 1998). Arend Lijphart, for example, has argued that "the development of international relations since the Second World War fits Kuhn's description of scientific revolutions" (1974a: 12).…”